t/t7408-submodule-reference.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2009, Red Hat Inc, Author: Michael S. Tsirkin (mst@redhat.com)
   4 #
   5
   6 test_description='test clone --reference'
   7 . ./test-lib.sh
   8
   9 base_dir=$(pwd)
  10
  11 test_alternate_is_used () {
  12         alternates_file="$1" &&
  13         working_dir="$2" &&
  14         test_line_count = 1 "$alternates_file" &&
  15         echo "0 objects, 0 kilobytes" >expect &&
  16         git -C "$working_dir" count-objects >actual &&
  17         test_cmp expect actual
  18 }
  19
  20 test_expect_success 'preparing first repository' '
  21         test_create_repo A &&
  22         (
  23                 cd A &&
  24                 echo first >file1 &&
  25                 git add file1 &&
  26                 git commit -m A-initial
  27         )
  28 '
  29
  30 test_expect_success 'preparing second repository' '
  31         git clone A B &&
  32         (
  33                 cd B &&
  34                 echo second >file2 &&
  35                 git add file2 &&
  36                 git commit -m B-addition &&
  37                 git repack -a -d &&
  38                 git prune
  39         )
  40 '
  41
  42 test_expect_success 'preparing superproject' '
  43         test_create_repo super &&
  44         (
  45                 cd super &&
  46                 echo file >file &&
  47                 git add file &&
  48                 git commit -m B-super-initial
  49         )
  50 '
  51
  52 test_expect_success 'submodule add --reference uses alternates' '
  53         (
  54                 cd super &&
  55                 git submodule add --reference ../B "file://$base_dir/A" sub &&
  56                 git commit -m B-super-added &&
  57                 git repack -ad
  58         ) &&
  59         test_alternate_is_used super/.git/modules/sub/objects/info/alternates super/sub
  60 '
  61
  62 test_expect_success 'submodule add --reference with --dissociate does not use alternates' '
  63         (
  64                 cd super &&
  65                 git submodule add --reference ../B --dissociate "file://$base_dir/A" sub-dissociate &&
  66                 git commit -m B-super-added &&
  67                 git repack -ad
  68         ) &&
  69         test_path_is_missing super/.git/modules/sub-dissociate/objects/info/alternates
  70 '
  71
  72 test_expect_success 'that reference gets used with add' '
  73         (
  74                 cd super/sub &&
  75                 echo "0 objects, 0 kilobytes" >expected &&
  76                 git count-objects >current &&
  77                 diff expected current
  78         )
  79 '
  80
  81 # The tests up to this point, and repositories created by them
  82 # (A, B, super and super/sub), are about setting up the stage
  83 # for subsequent tests and meant to be kept throughout the
  84 # remainder of the test.
  85 # Tests from here on, if they create their own test repository,
  86 # are expected to clean after themselves.
  87
  88 test_expect_success 'updating superproject keeps alternates' '
  89         test_when_finished "rm -rf super-clone" &&
  90         git clone super super-clone &&
  91         git -C super-clone submodule update --init --reference ../B &&
  92         test_alternate_is_used super-clone/.git/modules/sub/objects/info/alternates super-clone/sub
  93 '
  94
  95 test_expect_success 'updating superproject with --dissociate does not keep alternates' '
  96         test_when_finished "rm -rf super-clone" &&
  97         git clone super super-clone &&
  98         git -C super-clone submodule update --init --reference ../B --dissociate &&
  99         test_path_is_missing super-clone/.git/modules/sub/objects/info/alternates
 100 '
 101
 102 test_expect_success 'submodules use alternates when cloning a superproject' '
 103         test_when_finished "rm -rf super-clone" &&
 104         git clone --reference super --recursive super super-clone &&
 105         (
 106                 cd super-clone &&
 107                 # test superproject has alternates setup correctly
 108                 test_alternate_is_used .git/objects/info/alternates . &&
 109                 # test submodule has correct setup
 110                 test_alternate_is_used .git/modules/sub/objects/info/alternates sub
 111         )
 112 '
 113
 114 test_expect_success 'missing submodule alternate fails clone and submodule update' '
 115         test_when_finished "rm -rf super-clone" &&
 116         git clone super super2 &&
 117         test_must_fail git clone --recursive --reference super2 super2 super-clone &&
 118         (
 119                 cd super-clone &&
 120                 # test superproject has alternates setup correctly
 121                 test_alternate_is_used .git/objects/info/alternates . &&
 122                 # update of the submodule succeeds
 123                 test_must_fail git submodule update --init &&
 124                 # and we have no alternates:
 125                 test_path_is_missing .git/modules/sub/objects/info/alternates &&
 126                 test_path_is_missing sub/file1
 127         )
 128 '
 129
 130 test_expect_success 'ignoring missing submodule alternates passes clone and submodule update' '
 131         test_when_finished "rm -rf super-clone" &&
 132         git clone --reference-if-able super2 --recursive super2 super-clone &&
 133         (
 134                 cd super-clone &&
 135                 # test superproject has alternates setup correctly
 136                 test_alternate_is_used .git/objects/info/alternates . &&
 137                 # update of the submodule succeeds
 138                 git submodule update --init &&
 139                 # and we have no alternates:
 140                 test_path_is_missing .git/modules/sub/objects/info/alternates &&
 141                 test_path_is_file sub/file1
 142         )
 143 '
 144
 145 test_expect_success 'preparing second superproject with a nested submodule plus partial clone' '
 146         test_create_repo supersuper &&
 147         (
 148                 cd supersuper &&
 149                 echo "I am super super." >file &&
 150                 git add file &&
 151                 git commit -m B-super-super-initial &&
 152                 git submodule add "file://$base_dir/super" subwithsub &&
 153                 git commit -m B-super-super-added &&
 154                 git submodule update --init --recursive &&
 155                 git repack -ad
 156         ) &&
 157         git clone supersuper supersuper2 &&
 158         (
 159                 cd supersuper2 &&
 160                 git submodule update --init
 161         )
 162 '
 163
 164 # At this point there are three root-level positories: A, B, super and super2
 165
 166 test_expect_success 'nested submodule alternate in works and is actually used' '
 167         test_when_finished "rm -rf supersuper-clone" &&
 168         git clone --recursive --reference supersuper supersuper supersuper-clone &&
 169         (
 170                 cd supersuper-clone &&
 171                 # test superproject has alternates setup correctly
 172                 test_alternate_is_used .git/objects/info/alternates . &&
 173                 # immediate submodule has alternate:
 174                 test_alternate_is_used .git/modules/subwithsub/objects/info/alternates subwithsub &&
 175                 # nested submodule also has alternate:
 176                 test_alternate_is_used .git/modules/subwithsub/modules/sub/objects/info/alternates subwithsub/sub
 177         )
 178 '
 179
 180 check_that_two_of_three_alternates_are_used() {
 181         test_alternate_is_used .git/objects/info/alternates . &&
 182         # immediate submodule has alternate:
 183         test_alternate_is_used .git/modules/subwithsub/objects/info/alternates subwithsub &&
 184         # but nested submodule has no alternate:
 185         test_path_is_missing .git/modules/subwithsub/modules/sub/objects/info/alternates
 186 }
 187
 188
 189 test_expect_success 'missing nested submodule alternate fails clone and submodule update' '
 190         test_when_finished "rm -rf supersuper-clone" &&
 191         test_must_fail git clone --recursive --reference supersuper2 supersuper2 supersuper-clone &&
 192         (
 193                 cd supersuper-clone &&
 194                 check_that_two_of_three_alternates_are_used &&
 195                 # update of the submodule fails
 196                 test_must_fail git submodule update --init --recursive
 197         )
 198 '
 199
 200 test_expect_success 'missing nested submodule alternate in --reference-if-able mode' '
 201         test_when_finished "rm -rf supersuper-clone" &&
 202         git clone --recursive --reference-if-able supersuper2 supersuper2 supersuper-clone &&
 203         (
 204                 cd supersuper-clone &&
 205                 check_that_two_of_three_alternates_are_used &&
 206                 # update of the submodule succeeds
 207                 git submodule update --init --recursive
 208         )
 209 '
 210
 211 test_done